ˈgīdə(r) noun
( -s )
Etymology: Middle English gidour, gider, from Middle French guideor, guideur, alteration (influenced by guide ) of Old French guieor, guieur, from guier to guide + -eor, -eur -or — more at guide (v.)
: one that guides: as
a. : a device that functions as a guide (as in some production operation)
b. : an adult volunteer leader of a girl guide company in Britain, Canada, and various other countries